Help with elimination

Many Thanks

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents